// Copyright (C) Kumo inc. and its affiliates.
// Author: Jeff.li lijippy@163.com
// All rights reserved.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
//

#pragma once

#include <kmsql/sql/parser_result.h>
#include <kmsql/sql/grammar/statements.h>

namespace kmsql {

// Static methods used to parse SQL strings.
class SQLParser {
 public:
  // Parses a given constant character SQL string into the result object.
  // Returns true if the lexer and parser could run without internal errors.
  // This does NOT mean that the SQL string was valid SQL. To check that
  // you need to check result->isValid();
  static bool parse(const std::string& sql, SQLParserResult* result);

  // Run tokenization on the given string and store the tokens in the output vector.
  static bool tokenize(const std::string& sql, std::vector<int16_t>* tokens);

  // Deprecated.
  // Old method to parse SQL strings. Replaced by parse().
  static bool parseSQLString(const char* sql, SQLParserResult* result);

  // Deprecated.
  // Old method to parse SQL strings. Replaced by parse().
  static bool parseSQLString(const std::string& sql, SQLParserResult* result);

 private:
  SQLParser();
};

}  // namespace kmsql
